Ok so I'm training up my Suicune, on Gen4, and I don't know what combo would work best Rest/IceBeam/Surf/Calm Mind (w/Chesto Berry) or Rest/SleepTalk/Surf/CalmMind (w/Leftovers), both with EVs in HP 244/Def 200/Spd 64. That's what I was planning for Suicune. I don't think I'll be recovering too much after I have Calm Mind set up, but I'm not sure what people would do once I have that done. Would they just use Roar or something? I don't have much battle experience so what are you guys' inputs on this?

Welp RestTalk Suicune is quite the pain to deal with, so I'd reccommend that especially since it's Gen IV when it was even better.

Just kill anything you think might be able to Roar/Whirlwind it out (scout for such things with other boosters) and then go for the sweep